I did some refactoring in the c167 specific platform code, and I came across a problem with the built-in build.
Previous code:
asm volatile ( "
extp #pag:%0, #3
mov r4, pof:%0 @ R4 = g_nRcvBufCount
sub r4, #1 @ R4 = R4 - 1
mov pof:%0, r4 @ g_nRcvBufCount = R4"
: "=m" (g_nRcvBufCount)
:
: "r4"
);
[
Basically, this code executes the atomic decrement of the variable "g_nRcvBufCount"
Team"extp" takes "the page of the" variable "g_nRcvBufCount" and the number of subsequent atomic expressions (in this case 3)
]
Current - not compiled code:
asm volatile ( "
extp #pag:%0, #3
mov r4, pof:%0 @ R4 = cfg->g_nRcvBufCount
sub r4, #1 @ R4 = R4 - 1
mov pof:%0, r4 @ cfg->g_nRcvBufCount = R4"
: "=m" (cfg->g_nRcvBufCount)
:
: "r4"
);
where cfg is a pointer to a structure containing the variable g_nRcvBufCount.
struct {
...
unsigned short g_nRcvBufCount;
...
}cfg;
Errors received during compilation are as follows:
test.c:1124:Warning:Missing operand value assumed absolute 0.
test.c:1124:extp #pag:[r2+#66],#3: trailing chars after expression
test.c:1125:Warning:Missing operand value assumed absolute 0.
test.c:1125:mov r4,pof:[r2+#66]: trailing chars after expression
test.c:1127:Warning:Missing operand value assumed absolute 0.
test.c:1127:mov pof:[r2+#66],r4: trailing chars after expression
, , . x86 ( ) , , C/++. GNU, , "= m", .
,